Dr. J. Michael Hollas is a retired University lecturer with many years' teaching and research experience. He has written over 100 research papers. Prior to Modern Spectroscopy he published 3 books, Symmetry in Molecules (Chapman and Hall, 1972), High Resolution Spectroscopy 2.ed. (Wiley, 1998) and Basic Atomic and Molecular Spectroscopy (Royal Society of Chemistry, 2002).